/Engine/Source/Editor/SubobjectDataInterface/Public/SubobjectDataSubsystem.h
Find the scene root for a given subobject handle. If this is an actor, then it will return the handle pointing to its DefaultSceneRoot. If this is a component, it will walk the parent chain until it finds the DefaultSceneRoot.
[FSubobjectDataHandle](API\Editor\SubobjectDataInterface\FSubobjectDataHandle) FindSceneRootForSubobject ( const [FSubobjectDataHandle](API\Editor\SubobjectDataInterface\FSubobjectDataHandle) & InHandle ) const